Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 58, Issue 35, Pages 12180-12184Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201907082
Keywords
carbon nitride; catalyst immobilization; CO2 reduction; cobalt phthalocyanine; photocatalysis
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Funding
- European Commission's Horizon 2020 research and innovation program [GAN745604]
- Christian Doppler Association (Austrian Federal Ministry for Digital and Economic Affairs, the National Foundation for Research, Technology and Development)
- OMV
- EPSRC [EP/P030467/1]
- [PR16195]
- EPSRC [EP/P030467/1] Funding Source: UKRI
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The integration of molecular catalysts with low-cost, solid light absorbers presents a promising strategy to construct catalysts for the generation of solar fuels. Here, we report a photocatalyst for CO2 reduction that consists of a polymeric cobalt phthalocyanine catalyst (CoPPc) coupled with mesoporous carbon nitride (mpg-CNx) as the photosensitizer. This precious-metal-free hybrid catalyst selectively converts CO2 to CO in organic solvents under UV/Vis light (AM 1.5G, 100 mW cm(-2), lambda>300 nm) with a cobalt-based turnover number of 90 for CO after 60 h. Notably, the photocatalyst retains 60 % CO evolution activity under visible light irradiation (lambda>400 nm) and displays moderate water tolerance. The in situ polymerization of the phthalocyanine allows control of catalyst loading and is key for achieving photocatalytic CO2 conversion.
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